Sphere Calculator
Compute volume and surface area of a sphere. Free online Sphere Calculator for geometry — instant, accurate results, mobile-friendly, no signup needed.
Derivation
- ├── 01Given
r = 5 - ├── 02Formula
Volume = 4/3·π·r³ · Surface = 4π·r² - ├── 03r³
5³ = 125.0000 - ├── 04Volume(4/3) × π × 125.0000 = 523.5988
- ├── 05r²
5² = 25.0000 - └── 06Surface4 × π × 25.0000 = 314.1593
Archimedes was reportedly so proud of proving that a sphere has 2⁄3 the volume of its enclosing cylinder that he asked for the diagram carved on his tombstone.
Understanding the Sphere Calculator
The Sphere Calculator helps you compute compute volume and surface area of a sphere.. It runs entirely in your browser with no sign-up required.
Geometry is what turns raw measurements into useful answers about space — how much paint, how big a yard, how much material a project will need. Every craftsperson, architect, and DIYer reaches for these formulas regularly. The Sphere Calculator sits in that toolkit — it compute volume and surface area of a sphere. Enter your numbers above and the result updates instantly; every step of the math is shown in the Derivation panel so you can see exactly how the answer was reached.
Frequently asked questions
How useful was this calculator?
Your ratings stay in your browser — they help us learn which tools people actually rely on.